code: def main():
      parser = argparse.ArgumentParser()
      parser.add_argument(
          "--mode", choices=["kill_slow", "kill_very_slow"]
      )
  
      args = parser.parse_args()
      if args.mode == "kill_slow":
          process_kill_slow()
      elif args.mode == "kill_very_slow":
          process_kill_slow(15)
      else:
          # debuggings here
          pass
  
file_path: nni/test/ut/tools/nnictl/test_kill_command.py
imports: import argparse
  import multiprocessing
  import os
  import subprocess
  import signal
  import sys
  import signal
  import time
  import pytest
  from nni.tools.nnictl.command_utils import kill_command, _check_pid_running
label_desc: Use image node_id 9 for calling a global function with example usage: main() without return types